Salt mist solid particle concentration monitoring method for coastal environment

Abstract

The invention provides a salt mist solid particle concentration monitoring method for a coastal environment, a salt mist solid particle concentration monitoring device and an external processing system are adopted, the device comprises a hard fence, two valve assemblies arranged in the hard fence, a self-adaptive jacking system and two monitoring mechanisms, an air flow channel penetrating front and back is formed in the hard fence, the two air valve assemblies divide the air flow channel into three spaces in the longitudinal direction of the air flow channel, each air valve assembly comprises an air inlet mechanism and an air outlet mechanism, and when the air flow reaches the preset wind power level, the air flow opens the air inlet mechanism on the windward side and the air outlet mechanism on the windward side; the air flow enters the middle space to drive the self-adaptive jacking system, so that the self-adaptive jacking system closes the air outlet mechanism on the windward side, meanwhile, the air flow continues to advance and flows through the monitoring mechanism on the leeward side, and the salt mist solid particle concentration of the flowing air flow is monitored through the monitoring mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a method for monitoring the concentration of salt fog solid particles in a coastal environment. Background Art

[0002] With age, reinforced concrete structures in coastal cities often experience a decline in durability, such as steel corrosion and concrete cracking. This is primarily due to the influence of factors such as sea breezes and tides in coastal environments, which create a large amount of salt and solid particles in the air, forming salt fog. These substances, driven by wind, gradually penetrate the concrete, inducing corrosion of the steel bars, leading to volume expansion, cracking, and loosening of the concrete. Therefore, establishing a salt fog solid particle concentration monitoring system for coastal environments is crucial for analyzing the safety status of reinforced concrete structures in coastal cities. Salt fog, the primary corrosive component, is sodium chloride, a chloride salt found in the ocean. Under the influence of waves and tides, these salt and solid particles are transported into reinforced concrete structures in coastal cities by wind, eroding the passive oxide film on the steel bars, causing corrosion, which in turn leads to cracks in the concrete and reduces the durability of the structure.

[0003] At present, the research work of relevant domestic personnel is mainly focused on the research of concrete erosion. The common practice is to establish salt spray protection facilities to prevent salt spray from corroding reinforced concrete structures. For example, the domestic invention patent "A method for three-dimensional greening of coastal ecological protection windbreaks using thick vines (CN118355840A)" uses native plants, thick vines, to carry out three-dimensional greening of coastal ecological protection windbreaks to improve the adaptability of building structures to salt spray environments; or in the preparation of anti-erosion concrete, a common practice is to add corrosion-resistant admixtures and fill the internal structure gaps of the concrete through secondary hydration of the admixtures, such as the domestic invention patent "A high-performance corrosion-resistant concrete for coastal environments and its preparation method (CN202411565 470.2)" adds a large amount of concrete corrosion-resistant admixture during concrete preparation, and fills the internal structural voids of the concrete through the secondary hydration of the concrete corrosion-resistant admixture, thereby improving the concrete's impermeability and chloride ion permeability. The domestic invention patent "A high-durability inorganic steel bar anti-rust coating material for use in salt lake environments and its construction process (CN202410955365.3)" improves the structure's corrosion resistance by adding an anti-rust coating on the steel bar surface. The idea of ​​improving concrete corrosion resistance from the perspective of changing raw materials does not involve revealing the analysis of chloride ion content. When the chloride ion content inside and outside the concrete changes, it cannot adapt in time and can only meet the use requirements under specific working conditions. The above patent ideas mainly focus on taking measures to deal with salt spray erosion from the structure itself. The premise of these measures is to improve the corrosion resistance of concrete from the perspective of raw material changes.

[0004] The requirement is to be able to judge whether salt spray will have an impact on the building structure, and to be able to intelligently monitor different salt spray particle concentrations in the face of different wind levels, thereby providing data assistance to designers. Summary of the Invention

[0005] The present invention aims to provide a salt fog solid particle concentration monitoring method for coastal environments, which can monitor the concentration of salt fog solid particles in the environment in real time. It is of great significance for evaluating the corrosion resistance of reinforced concrete structures in coastal cities, formulating protective measures, and ensuring the safe operation of facilities.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A method for monitoring the concentration of salt fog solid particles in a coastal environment adopts a salt fog solid particle concentration monitoring system for a coastal environment, the salt fog solid particle concentration monitoring system for a coastal environment includes a salt fog solid particle concentration monitoring device and an external processing system, the salt fog solid particle concentration monitoring device includes a hard enclosure and two valve assemblies arranged inside the hard enclosure, an adaptive tightening system and two monitoring mechanisms, the monitoring mechanisms are communicatively connected to the external processing system, the hard enclosure is arranged horizontally, and the hard enclosure has an air flow channel that passes through from front to back, the two valve assemblies divide the air flow channel into three spaces along the longitudinal direction of the air flow channel, the three spaces include a middle space and outer spaces located on both sides of the middle space, the adaptive tightening system is arranged in the middle space and in the middle of the bottom plate of the hard enclosure, each valve assembly includes a one-way air intake mechanism and a two-way air outlet mechanism, and the air intake mechanism can only introduce the air flow in the outer space into In the middle space, the upper end of the air intake mechanism is installed on the top plate of the hard enclosure, and the lower end of the air outlet mechanism is installed on the bottom plate of the hard enclosure. The air intake mechanism and the air outlet mechanism are arranged correspondingly up and down. When the air intake mechanism and the air outlet mechanism of the two valve assemblies are in a closed state, the lower end of the air intake mechanism and the upper end of the corresponding air outlet mechanism can offset each other, so that the middle space becomes a closed space. The two monitoring mechanisms are respectively arranged on the outside of the air outlet mechanism of the corresponding valve assembly. The resistance to opening of the air intake mechanism and the air outlet mechanism is the same. When the airflow reaches a predetermined wind force level, the airflow can open the air intake mechanism and the air outlet mechanism on the windward side and enter the middle space, driving the adaptive tightening system so that the adaptive tightening system closes the air outlet mechanism on the windward side. At the same time, the airflow continues to move forward and flows through the monitoring mechanism on the leeward side. The monitoring mechanism can collect salt fog solid particles in the airflow flowing through the monitoring mechanism. The external processing system uses the salt fog solid particles collected by the monitoring mechanism to judge the concentration of salt fog solid particles in the coastal environment.

[0008] Preferably, in the above-mentioned salt spray solid particle concentration monitoring method for coastal environment, the monitoring mechanism includes a monitoring room and a water tank, the water tank is arranged in the monitoring room, a weight sensor is arranged between the bottom of the water tank and the bottom plate of the hard enclosure, the weight sensor is connected to the external processing system by wired or wireless means, there is liquid pure water inside the water tank, a horizontal partition is arranged above the water tank, one end of the horizontal partition is arranged on the outer side surface that is against the lower end of the air intake mechanism and the upper end of the air outlet mechanism and can simultaneously contact the lower end of the air intake mechanism and the air outlet mechanism The upper end of the horizontal partition is abutted against each other, and the other end of the horizontal partition is connected to the upper end of the side wall of the water tank away from the adaptive tightening system through the vertical filter plate. The monitoring chamber is surrounded by an air outlet mechanism, a horizontal partition, a vertical filter plate, a side wall of the water tank away from the adaptive tightening system and a hard enclosure. The airflow entering the monitoring mechanism flows out of the monitoring mechanism through the vertical filter plate. The salt mist solid particles in the airflow flowing through the vertical filter plate are blocked by the vertical filter plate and fall into the liquid pure water in the water tank. The weight change of the liquid pure water is monitored by a weight sensor to obtain the weight change of the salt mist solid particles in the liquid pure water.

[0009] Preferably, in the above-mentioned method for monitoring the concentration of salt spray solid particles in a coastal environment, the adaptive tightening system includes a bracket, a plurality of pneumatic plates, an upper horizontal support, a reverse transmission mechanism and a lower horizontal support. The plurality of pneumatic plates are fixedly arranged on the upper horizontal support at equal intervals. The upper horizontal support and the lower horizontal support are both arranged horizontally. The pneumatic plates are arranged vertically and perpendicular to the longitudinal direction of the hard enclosure. The bracket includes two vertical support plates and a horizontal support part. Each vertical support plate is arranged along the transverse length of the hard enclosure. A through hole is provided on each vertical support plate for the lower horizontal support to pass through. The upper horizontal support The width of the member and the lower horizontal support member are both smaller than the width of the vertical support plate. The lower ends of the two vertical support plates are spaced apart and arranged on the bottom plate of the hard enclosure. The upper ends of the two vertical support plates are respectively vertically connected to the two ends of the horizontal support part. The reverse transmission mechanism is arranged on the horizontal support part of the bracket, the upper horizontal support member is arranged above the reverse transmission mechanism, and the lower horizontal support member is arranged parallel to the bottom of the horizontal support part. When the airflow enters the middle space, the airflow pushes the pneumatic plate to move, thereby driving the upper horizontal support member to move. The upper horizontal support member drives the lower horizontal support member to move in the opposite direction through the reverse transmission mechanism, so that the air outlet mechanism on the windward side is in a closed state.

[0010] Preferably, in the above-mentioned salt spray solid particle concentration monitoring method for coastal environment, the two wind-driven plates located in the middle of the upper horizontal support are the highest, and the heights of the wind-driven plates decrease from the center of the upper horizontal support to both sides.

[0011] Preferably, in the above-mentioned method for monitoring the concentration of salt spray solid particles in a coastal environment, the upper horizontal support member adopts an upper top plate, the lower horizontal support member adopts a lower top plate, the reverse transmission mechanism includes a plurality of hollow rollers and two elastic cables, the horizontal support portion is provided with a long strip through-hole for the plurality of hollow rollers to pass through, the hollow rollers are respectively installed on the horizontal support portion, the lower top plate is arranged parallel to the bottom of the horizontal support portion, and the two ends of the lower top plate are connected to the two ends of the horizontal support portion through corresponding elastic cables, the plurality of hollow rollers are sequentially arranged on the lower top plate, and the upper top plate is arranged on the plurality of hollow rollers, when the airflow enters the middle space, the airflow pushes the pneumatic plate to move, thereby driving the upper top plate to move, the movement of the upper top plate drives the hollow roller to rotate, and the rotation of the hollow roller drives the lower top plate to move in the opposite direction, so that the air outlet mechanism on the windward side is in a closed state.

[0012] Preferably, in the above-mentioned salt spray solid particle concentration monitoring method for coastal environment, all hollow rollers are respectively installed on the corresponding horizontal plate through a connecting mechanism, and the connecting mechanism includes two connecting plates and a central shaft. The hollow rollers are respectively provided with central holes for the central shaft to pass through, and the hollow rollers are respectively sleeved on the corresponding central shafts. The two ends of the central shaft are respectively fixedly connected to one end of the corresponding connecting plate, and the other end of the corresponding connecting plate is respectively fixedly connected to the horizontal plate, and the hollow rollers can respectively rotate freely relative to the corresponding central shaft.

[0013] Preferably, in the above-mentioned salt spray solid particle concentration monitoring method for coastal environment, the upper horizontal support member adopts an upper rack, the lower horizontal support member adopts a lower rack, and the reverse transmission mechanism includes two gears and two elastic cables. The two gears are respectively installed on the horizontal support part, and a through hole for accommodating the gear is opened on the horizontal support part, and the two ends of the lower rack are connected to the two ends of the horizontal support part through corresponding elastic cables. The lower rack and the upper rack are respectively located on the upper and lower sides of the gear, and the two gears are engaged with the upper rack and the lower rack. When the airflow enters the middle space, the airflow pushes the pneumatic plate to move, thereby driving the upper rack to move. The movement of the upper rack drives the gear to rotate, and the rotation of the gear drives the lower rack to move in the opposite direction, so that the air outlet mechanism on the windward side is in a closed state.

[0014] Preferably, in the above-mentioned salt spray solid particle concentration monitoring system for coastal environment, the adaptive tightening system also includes a gear drive motor and two infrared laser timers, the gear drive motor and the two infrared laser timers are respectively connected to the external processing system, the infrared laser timers are respectively arranged in the middle space, and the infrared laser timers can monitor whether the corresponding monitoring mechanism is turned on. When the air intake mechanism on the windward side is opened by the airflow, the infrared laser timer sends the information that the air intake mechanism on the windward side is opened by the airflow to the external processing system. After receiving the information, the external processing system notifies the gear drive motor to work, the gear drive motor drives the gear to rotate, and the gear drives the lower rack to move toward the air outlet mechanism on the windward side, closing the air outlet mechanism on the windward side.

[0015] Preferably, in the above-mentioned salt spray solid particle concentration monitoring system for coastal environment, the upper horizontal support member adopts an upper top plate, the lower horizontal support member adopts a lower top plate, the reverse transmission mechanism includes two transmission wheels and a transmission belt, the two transmission wheels are respectively installed on the horizontal support part, the transmission belt is installed on the two transmission wheels, the horizontal support part is provided with a through hole for accommodating the reverse transmission mechanism, the upper top plate and the upper center of the transmission belt are fixedly connected by a connecting member, and the lower top plate and the lower center of the transmission belt are fixedly connected by a connecting member. When the airflow enters the middle space, the airflow pushes the pneumatic plate to move, thereby driving the upper top plate to move, and the movement of the upper top plate drives the transmission belt to move, thereby driving the lower top plate to move in the opposite direction, so that the air outlet mechanism on the windward side is in a closed state. Preferably, in the above-mentioned salt fog solid particle concentration monitoring method for coastal environment, the air intake mechanism includes an air intake fixed seat, an air intake arc-shaped end plate, an air intake movable door plate and an air intake check plate, the air intake fixed seat and the air intake movable door plate are both arranged along the transverse length of the hard enclosure, the air intake fixed seat is an air intake semicircular groove body with an opening upward, the top two ends of the air intake semicircular groove body are respectively fixedly connected to the top plate of the hard enclosure, a through hole is provided at the bottom of the air intake semicircular groove body, and the air intake arc-shaped end plate is provided with a plurality of air intake holes. Located in the groove of the air intake semicircular groove body, the outer surface of the air intake arc-shaped end plate matches and fits the inner surface of the air intake semicircular groove body, the upper end of the air intake movable door plate passes through the through hole at the bottom of the air intake semicircular groove body and is vertically connected to the middle part of the outer convex surface of the air intake arc-shaped end plate, the air intake check plate is fixed in the air intake fixed seat, the air intake check plate is located on the outside of the end of the air intake arc-shaped end plate away from the middle space, and the air intake check plate can limit the rotation of the air intake movable door plate in the direction away from the middle space.

[0016] Preferably, in the above-mentioned salt fog solid particle concentration monitoring method for coastal environment, the air outlet mechanism includes an air outlet fixed seat, an air outlet arc-shaped end plate, an air outlet movable door plate and an air outlet top plate, the air outlet fixed seat and the air outlet movable door plate are both arranged along the transverse length of the hard enclosure, the air outlet fixed seat is an air outlet semicircular groove body with an opening downward, the bottom two ends of the air outlet semicircular groove body are respectively fixedly connected to the bottom plate of the hard enclosure, a through hole is provided on the top of the air outlet semicircular groove body, the air outlet arc-shaped end plate is located in the groove of the air outlet semicircular groove body, and the outer surface of the air outlet arc-shaped end plate is aligned with the air outlet semicircular groove The inner surface of the shaped groove body matches and fits closely, the upper end of the air outlet movable door plate passes through the through hole at the bottom of the air outlet semicircular groove body and is vertically connected to the middle of the outer convex surface of the air outlet arc-shaped end plate, the air outlet top plate is vertically fixed to the middle of the air outlet fixed seat, the lower end of the air outlet top plate is fixedly connected to the bottom plate of the hard enclosure, the air outlet top plate and the air outlet movable door plate in the closed state are located in the same plane, the top of the air outlet top plate is provided with a horizontally arranged cylinder, the inner concave surface of the air outlet arc-shaped end plate is supported by the air outlet top plate and the air outlet arc-shaped end plate can rotate freely around the cylinder on the top of the air outlet top plate.

[0017] Preferably, in the above-mentioned salt spray solid particle concentration monitoring method for coastal environment, two anemometers and two infrared laser timers are further included, and the two anemometers and two infrared laser timers are respectively communicated with the external processing system, and the anemometers are respectively arranged in the corresponding outer space and spaced above the corresponding monitoring mechanism, and the anemometers are respectively installed on the hard enclosure, and the infrared laser timers are respectively arranged in the middle space. The infrared laser timers can monitor whether the corresponding air intake mechanism is open, record the time points of the corresponding air intake mechanism opening and closing, start timing when the corresponding air intake mechanism is opened, and stop timing when the corresponding air intake mechanism is closed.

[0018] Preferably, in the above-mentioned method for monitoring the concentration of salt fog solid particles in a coastal environment, the concentration of salt fog solid particles is obtained by the following method:

[0019] When the air intake mechanism is opened by wind, the corresponding infrared laser timer starts timing, and the opening moment of the air intake mechanism is recorded as t0. The weight m0 of the liquid pure water when the air intake mechanism is opened is measured by the weight sensor;

[0020] When the air intake mechanism is closed, the corresponding infrared laser timer stops timing, and the closing time of the air intake mechanism is recorded as t1; the weight m1 of the liquid pure water when the air intake mechanism is closed is measured by the weight sensor;

[0021] The wind speed is measured in real time by an anemometer, and the average wind speed v from the opening to the closing of the air intake mechanism is obtained.

[0022] Calculate the air flow rate Q, Q = dhv, where d is the width of the hard enclosure and h is the distance from the top of the monitoring mechanism to the top plate of the hard enclosure;

[0023] Calculate the total volume of air passing through the salt spray solid particle concentration monitoring device from the time the air intake mechanism is opened to the time it is closed, denoted as V, where V = Q(t1-t0);

[0024] Calculate the salt spray solid particle size concentration W, W = (m1-m0) / V, the unit of salt spray solid particle size concentration W is g / L.

[0025] Preferably, in the above-mentioned salt mist solid particle concentration monitoring method for coastal environment, the salt mist solid particle concentration is obtained by the following method: the daily weight change of liquid pure water is monitored by a monitoring mechanism to obtain the daily weight change of salt mist solid particles, and the daily measured weight change of salt mist solid particles is used as the salt mist solid particle concentration in the air, in grams / day.

[0026] It can be seen from the technical solutions disclosed above that, compared with the prior art, the present invention has the following beneficial effects:

[0027] In summary, the present invention provides a method for monitoring the concentration of salt mist solid particles in a coastal environment, including a salt mist solid particle concentration monitoring device and an external processing system, wherein the salt mist solid particle concentration monitoring device includes a hard enclosure and two valve assemblies arranged inside the hard enclosure, an adaptive tightening system and two monitoring mechanisms, the monitoring mechanism is communicatively connected to the external processing system, the hard enclosure is horizontally arranged, and the interior of the hard enclosure has an air flow channel that passes through from front to back, the two valve assemblies divide the air flow channel into three spaces along the longitudinal direction of the air flow channel, the three spaces include a middle space and outer spaces located on both sides of the middle space, the adaptive tightening system is arranged in the middle space and in the middle of the bottom plate of the hard enclosure, each valve assembly includes a one-way air intake mechanism and a two-way air outlet mechanism, the air intake mechanism can only introduce the air flow in the outer space into the middle space, the upper end of the air intake mechanism is installed on the top plate of the hard enclosure, and the lower end of the air outlet mechanism is installed on the bottom plate of the hard enclosure, and the air intake mechanism corresponds to the air outlet mechanism up and down. The arrangement is such that when the air intake mechanism and the air outlet mechanism of the two valve assemblies are in a closed state, the lower end of the air intake mechanism and the upper end of the corresponding air outlet mechanism can offset each other, so that the middle space becomes a closed space. The two monitoring mechanisms are respectively arranged on the outside of the air outlet mechanism of the corresponding valve assembly. The resistance to opening the air intake mechanism and the air outlet mechanism is the same. When the airflow reaches a predetermined wind force level, the airflow can open the air intake mechanism and the air outlet mechanism on the windward side and enter the middle space, driving the adaptive tightening system to make the adaptive tightening system close the air outlet mechanism on the windward side. At the same time, the airflow continues to move forward and flows through the monitoring mechanism on the leeward side. The monitoring mechanism can collect salt fog solid particles in the airflow flowing through the monitoring mechanism. The external processing system uses the salt fog solid particles collected by the monitoring mechanism to judge the concentration of salt fog solid particles in the coastal environment. Once the concentration of salt fog solid particles exceeds the standard, the reinforced concrete structure can be protected in time to reduce the risk of salt fog erosion of the reinforced concrete structure. This is of great significance for evaluating the corrosion resistance of reinforced concrete structures in coastal cities, formulating protective measures, and ensuring the safe operation of facilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a schematic structural diagram of a salt fog solid particle concentration monitoring system for a coastal environment in a first embodiment of a salt fog solid particle concentration monitoring method for a coastal environment.

[0029] Figure 2 This is a structural diagram of the adaptive tightening system in Example 1 when it is not affected by wind.

[0030] Figure 3 yes Figure 2 side view.

[0031] Figure 43 is a schematic structural diagram of the adaptive tightening system in Example 1 when it is affected by wind.

[0032] Figure 5 It is a structural diagram of the monitoring mechanism in Example 1.

[0033] Figure 6 It is a structural schematic diagram of a salt fog solid particle concentration monitoring system for a coastal environment in a second embodiment of a salt fog solid particle concentration monitoring method for a coastal environment of the present invention.

[0034] Figure 7 This is a schematic structural diagram of the salt mist solid particle concentration monitoring system for coastal environments in Example 2 when wind enters the external space on the windward side.

[0035] Figure 8 This is a schematic structural diagram of the salt mist solid particle concentration monitoring system for coastal environments in Example 2 when wind enters the middle space.

[0036] Figure 9 This is a structural diagram of the salt mist solid particle concentration monitoring system for coastal environments in Example 2 when wind enters the middle space and drives the adaptive tightening system to operate.

[0037] Figure 10 This is a schematic structural diagram of the salt mist solid particle concentration monitoring system for coastal environments in Example 2 when wind enters the monitoring mechanism on the leeward side.

[0038] Figure 11 This is a structural diagram of the salt mist solid particle concentration monitoring system for coastal environments in Example 2 when wind passes through the vertical filter plate and flows out of the monitoring mechanism.

[0039] Figure 12 This is a schematic structural diagram of the salt fog solid particle concentration monitoring system for coastal environments in Example 2 when the wind stops.

[0040] Figure 13 The present invention is a structural diagram of a third embodiment of a salt spray solid particle concentration monitoring system for a coastal environment.

[0041] Figure 14 This is a schematic diagram of the structure of the adaptive tightening system in Example 3 when it is not affected by wind.

[0042] Figure 15 yes Figure 14 side view.

[0043] Figure 16 This is a schematic diagram of the structure of the adaptive tightening system in Example 3 when it is affected by wind.

[0044] Figure 17This is a schematic structural diagram of the adaptive tightening system in Example 4 when it is not affected by wind.

[0045] Figure 18 It is a structural diagram of the adaptive tightening system in Example 4 when it is affected by wind.

[0046] In the figure: 1-hard enclosure, 2-adaptive tightening system, 21-bracket, 211-vertical support plate, 212-horizontal support, 22-pneumatic plate, 23-upper horizontal support, 24-hollow roller, 24'-gear, 24"-transmission wheel, 25-lower horizontal support, 26-elastic cable, 26"-transmission belt, 27"-connector, 3-monitoring mechanism, 31-monitoring room, 32-water tank, 33-weight sensor, 34-liquid pure water, 35-horizontal partition, 36-vertical filter plate, 4-air intake mechanism, 41-air intake fixed seat, 42-air intake arc-shaped end plate, 43-air intake movable door plate, 44-air intake check plate, 5-air outlet mechanism, 51-air outlet fixed seat, 52-air outlet arc-shaped end plate, 53-air outlet movable door plate, 54-air outlet top plate, 6-infrared laser timer, 7-anemometer. DETAILED DESCRIPTION

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following examples, combined with the accompanying drawings, will provide a detailed description of the technical content and features of the present invention. It should be noted that the drawings are all in a very simplified form and are not precisely proportioned, and are only used to conveniently and clearly assist in illustrating the purpose of the embodiments of the present invention. For ease of description, the "upper" and "lower" described below are consistent with the upper and lower directions in the accompanying drawings, but this does not constitute a limitation of the technical solution of the present invention.

[0048] Example 1

[0049] See also Figures 1 to 5, this embodiment provides a salt fog solid particle concentration monitoring method for a coastal environment, using a salt fog solid particle concentration monitoring system for a coastal environment, the salt fog solid particle concentration monitoring system for a coastal environment includes a salt fog solid particle concentration monitoring device and an external processing system, the salt fog solid particle concentration monitoring device includes a hard enclosure 1 and two valve assemblies arranged inside the hard enclosure 1, an adaptive tightening system 2 and two monitoring mechanisms 3, the monitoring mechanism 3 is communicatively connected to the external processing system, the hard enclosure 1 is horizontally arranged, and the hard enclosure 1 has a The air flow channel runs through the front and back, and the two valve assemblies divide the air flow channel into three spaces along the longitudinal direction of the air flow channel. The three spaces include a middle space and outer spaces on both sides of the middle space. The adaptive tightening system 2 is arranged in the middle space and in the middle of the bottom plate of the hard enclosure 1. Each valve assembly includes a one-way air intake mechanism 4 and a two-way air outlet mechanism 5. The air intake mechanism 4 can only introduce the airflow in the outer space into the middle space. The upper end of the air intake mechanism 4 is installed on the top plate of the hard enclosure 1, and the lower end of the air outlet mechanism 5 is installed on the bottom of the hard enclosure 1. On the board, the air intake mechanism 4 and the air outlet mechanism 5 are arranged correspondingly up and down. When the air intake mechanism 4 and the air outlet mechanism 5 of the two valve assemblies are in the closed state, the lower end of the air intake mechanism 4 and the upper end of the corresponding air outlet mechanism 5 can be offset, so that the middle space becomes a closed space. The two monitoring mechanisms 3 are respectively arranged on the outside of the air outlet mechanism 5 of the corresponding valve assembly. The resistance to opening the air intake mechanism 4 and the air outlet mechanism 5 is the same. When the airflow reaches a predetermined wind force level, the airflow can open the air intake mechanism 4 on the windward side and the air outlet mechanism 5 on the windward side, enter the middle space, drive the adaptive tightening system 2, so that The adaptive tightening system 2 closes the air outlet mechanism 5 on the windward side. At the same time, the airflow continues to move forward and flows through the monitoring mechanism 3 on the leeward side. The monitoring mechanism 3 can collect salt mist solid particles in the airflow flowing through the monitoring mechanism 3. The external processing system uses the salt mist solid particles collected by the monitoring mechanism 3 to judge the concentration of salt mist solid particles in the coastal environment. Once the concentration of salt mist solid particles exceeds the standard, the reinforced concrete structure can be protected in time to reduce the risk of salt mist erosion of the reinforced concrete structure. This is of great significance for evaluating the corrosion resistance of reinforced concrete structures in coastal cities, formulating protective measures, and ensuring the safe operation of facilities.

[0050] Preferably, in the above-mentioned salt spray solid particle concentration monitoring method for coastal environment, the monitoring mechanism 3 includes a monitoring chamber 31 and a water tank 32, the water tank 32 is arranged in the monitoring chamber 31, and a weight sensor 33 is arranged between the bottom of the water tank 32 and the bottom plate of the hard enclosure 1, and the weight sensor 33 is connected to the external processing system by wired or wireless means. There is liquid pure water 34 inside the water tank 32, and a horizontal partition 35 is arranged above the water tank 32. One end of the horizontal partition 35 is arranged on the outer side surface that is against the lower end of the air intake mechanism 4 and the upper end of the air outlet mechanism 5 and can simultaneously contact the lower end of the air intake mechanism 4 and the upper end of the air outlet mechanism 5. In contrast, the other end of the horizontal partition 35 is connected to the upper end of the side wall of the water tank 32 away from the adaptive tightening system 2 through the vertical filter plate 36. The monitoring chamber 31 is surrounded by the air outlet mechanism 5, the horizontal partition 35, the vertical filter plate 36, the side wall of the water tank 32 away from the adaptive tightening system 2 and the hard enclosure 1. The airflow entering the monitoring mechanism 3 flows out of the monitoring mechanism 3 through the vertical filter plate 36. The salt mist solid particles in the airflow flowing through the vertical filter plate 36 are blocked by the vertical filter plate 36 and fall into the liquid pure water 34 in the water tank 32. The weight change of the liquid pure water 34 is monitored by the weight sensor 33 to obtain the weight change of the salt mist solid particles in the liquid pure water 34.

[0051] Preferably, in the above-mentioned salt mist solid particle concentration monitoring method for coastal environments, the vertical filter plate 36 is a stainless steel filter plate. The vertical filter plate 36 made of stainless steel is resistant to corrosion by chloride ions, sulfides, etc., is suitable for high-salt or highly corrosive environments, has a smooth surface, and can to a certain extent prevent salt mist solid particles from adhering to the vertical filter plate 36, thereby improving the accuracy of salt mist solid particle concentration monitoring.

[0052] Preferably, in the above-mentioned salt mist solid particle concentration monitoring method for coastal environments, a vibrator (not shown) is provided on the vertical filter plate 36, which can cause the salt mist solid particles remaining on the vertical filter plate to fall into the water tank 32 below through vibration, thereby further improving the accuracy of salt mist solid particle concentration monitoring.

[0053] Preferably, in the above-mentioned salt spray solid particle concentration monitoring method for coastal environment, the adaptive tightening system 2 includes a bracket 21, a plurality of pneumatic plates 22, an upper horizontal support member 23, a reverse transmission mechanism and a lower horizontal support member 25, the plurality of pneumatic plates 22 are fixedly arranged on the upper horizontal support member 23 at equal intervals, the upper horizontal support member 23 and the lower horizontal support member 25 are both arranged horizontally, the pneumatic plates 22 are arranged vertically and the pneumatic plates 22 are perpendicular to the longitudinal direction of the hard enclosure 1, the bracket 21 includes two vertical support plates 211 and a horizontal support part 212, each vertical support plate 211 is arranged along the transverse length of the hard enclosure 1, and each vertical support plate 211 is provided with a through hole for the lower horizontal support member 25 to pass through, the upper horizontal support The width of the support member 23 and the lower horizontal support member 25 are both smaller than the width of the vertical support plate 211. The lower ends of the two vertical support plates 211 are spaced apart and arranged on the bottom plate of the hard enclosure 1. The upper ends of the two vertical support plates 211 are respectively vertically connected to the two ends of the horizontal support part 212. The reverse transmission mechanism is arranged on the horizontal support part 212 of the bracket 21, and the upper horizontal support member 23 is arranged above the reverse transmission mechanism. The lower horizontal support member 25 is arranged parallel to the bottom of the horizontal support part 212. When the airflow enters the middle space, the airflow pushes the pneumatic plate 22 to move, thereby driving the upper horizontal support member 23 to move. The upper horizontal support member 23 drives the lower horizontal support member 25 to move in the opposite direction through the reverse transmission mechanism, so that the air outlet mechanism 5 on the windward side is in a closed state.

[0054] Preferably, in the above-mentioned salt spray solid particle concentration monitoring method for coastal environment, the height of the two pneumatic plates 22 located in the middle of the upper horizontal support member 23 is the highest, and the heights of the several pneumatic plates 22 gradually decrease from the center of the upper horizontal support member 23 to both sides to facilitate the airflow to push the pneumatic plates 22 to move.

[0055] In this embodiment, the upper horizontal support member 23 adopts an upper top plate, and the lower horizontal support member 25 adopts a lower top plate. The reverse transmission mechanism includes a plurality of hollow rollers 24 and two elastic cables 26. The horizontal support portion 212 is provided with a long strip through hole for the plurality of hollow rollers 24 to pass through. The hollow rollers 24 are respectively installed on the horizontal support portion 212. The lower top plate is arranged parallel to the bottom of the horizontal support portion, and the two ends of the lower top plate are connected to the two ends of the horizontal support portion 212 by corresponding elastic cables 26. The plurality of hollow rollers 24 are arranged on the lower top plate in sequence, and the upper top plate is arranged on the plurality of hollow rollers 24. When the airflow enters the middle space, the airflow pushes the pneumatic plate 22 to move, thereby driving the upper top plate to move. The movement of the upper top plate drives the hollow rollers 24 to rotate, and the rotation of the hollow rollers 24 drives the lower top plate to move in the opposite direction, so that the air outlet mechanism 5 on the windward side is in a closed state. Since the salt mist solid particles in the airflow entering the middle space through the windward side air outlet mechanism 5 will be filtered out by the vertical filter plate 36 of the monitoring mechanism 3 on the windward side, the accuracy of the salt mist solid particle concentration measurement will be reduced. Therefore, by setting up the adaptive tightening system 2, the windward side air outlet mechanism 5 can be closed, thereby improving the accuracy of the salt mist solid particle concentration.

[0056] Preferably, in the above-mentioned salt spray solid particle concentration monitoring method for coastal environment, all hollow rollers 24 are respectively installed on the horizontal support part 212 through a connecting mechanism, and the connecting mechanism includes two connecting plates (not shown) and a central shaft (not shown). The hollow rollers 24 are respectively provided with central holes for the central shaft to pass through. The hollow rollers 24 are respectively sleeved on the corresponding central shafts, and the two ends of the central shafts are respectively fixedly connected to one end of the corresponding connecting plates, and the other ends of the corresponding connecting plates are respectively fixedly connected to the horizontal support part 212. The hollow rollers 24 can respectively rotate freely relative to the corresponding central shafts. Preferably, in the above-mentioned salt fog solid particle concentration monitoring method for coastal environment, the air intake mechanism 4 includes an air intake fixed seat 41, an air intake arc-shaped end plate 42, an air intake movable door plate 43 and an air intake check plate 44. The air intake fixed seat 41 and the air intake movable door plate 43 are both arranged along the transverse length of the hard enclosure 1. The air intake fixed seat 41 is an air intake semicircular groove body with an opening upward. The top two ends of the air intake semicircular groove body are respectively fixedly connected to the top plate of the hard enclosure 1. A through hole is provided at the bottom of the air intake semicircular groove body. The air intake arc-shaped end plate 42 is provided with a through hole. Located within the groove of the semicircular inlet groove, the outer surface of the arcuate end plate 42 matches and abuts the inner surface of the semicircular inlet groove. The upper end of the movable air intake door plate 43 passes through the through hole at the bottom of the semicircular inlet groove and is vertically connected to the middle portion of the outer convex surface of the arcuate end plate 42. The air intake check plate 44 is fixedly disposed within the air intake fixed seat 41. The air intake check plate 44 is located on the outer side of the end of the arcuate end plate 42 away from the central space. The air intake check plate 44 can limit the rotation of the movable air intake door plate 43 away from the central space. When the airflow does not reach the wind force level required to open the air intake mechanism 4 on the windward side, the air intake mechanism 4 is in a closed state, at which time the movable air intake door plate 43 is in a vertical state.

[0057] Preferably, in the above-mentioned salt fog solid particle concentration monitoring method for coastal environment, the air outlet mechanism 5 includes an air outlet fixed seat 51, an air outlet arc-shaped end plate 52, an air outlet movable door plate 53 and an air outlet top plate 54, the air outlet fixed seat 51 and the air outlet movable door plate 53 are both arranged along the transverse length of the hard enclosure 1, the air outlet fixed seat 51 is an air outlet semicircular groove body with an opening downward, the bottom two ends of the air outlet semicircular groove body are respectively fixedly connected to the bottom plate of the hard enclosure 1, a through hole is provided on the top of the air outlet semicircular groove body, the air outlet arc-shaped end plate 52 is located in the groove of the air outlet semicircular groove body, and the outer surface of the air outlet arc-shaped end plate 52 is aligned with the air outlet semicircular groove The inner surface of the body matches and fits together, the upper end of the air outlet movable door plate 53 passes through the through hole at the bottom of the air outlet semicircular groove body and is vertically connected to the middle of the outer convex surface of the air outlet arc-shaped end plate 52, the air outlet top plate 54 is vertically fixed to the middle of the air outlet fixed seat 51, the lower end of the air outlet top plate 54 is fixedly connected to the bottom plate of the hard enclosure 1, the air outlet top plate 54 and the air outlet movable door plate 53 in the closed state are located in the same plane, the top of the air outlet top plate 54 is provided with a horizontally arranged cylinder, the inner concave surface of the air outlet arc-shaped end plate 52 is supported by the air outlet top plate 54 and the air outlet arc-shaped end plate 52 can rotate freely around the cylinder on the top of the air outlet top plate 54. When the airflow does not reach the wind force level that can open the air outlet mechanism 5 on the windward side, the air outlet mechanism 5 is in a closed state. At this time, the air outlet movable door panel 53 is in a vertical state, and the upper end of the air outlet movable door panel 53 can be offset against the lower end of the corresponding air inlet movable door panel 43, so that the intermediate space becomes a closed space.

[0058] Preferably, in the above-mentioned salt mist solid particle concentration monitoring method for coastal environments, the concentration of salt mist solid particles in the coastal environment can be simply obtained by the following method: the weight change of the liquid pure water 34 is monitored every day by the monitoring mechanism 3, thereby obtaining the weight change of the salt mist solid particles every day, and the weight change of the salt mist solid particles measured every day is used as the concentration of salt mist solid particles in the air, and the unit is recorded as grams / day. By monitoring the weight change of the salt mist solid particles every day, the concentration change of the salt mist solid particles in the coastal environment is known. The specific method can be as follows:

[0059] (1) At 0 o'clock, record the weight m of the liquid pure water 34 monitored by the weight sensor 33 a ,

[0060] (2) At 24 o'clock (i.e. after 24 hours), record the weight m of the liquid pure water 34 monitored by the weight sensor 33. b ,

[0061] (3) Calculate the weight of solid particles in salt spray in one day m = m a -m b ;

[0062] (4) Calculate the salt spray particle concentration W = m / day (g / day).

[0063] The concentration here is not the traditional concentration. The concentration here represents the weight of salt spray solid particles in 1 day. If it is monitored continuously for 30 days, there will be 30 data, namely: w1......w 30 By calculating the mean and median, we can describe the concentration trend of the daily salt spray solid particle weight during this period, providing important reference for the corrosion resistance of building structures, formulating protective measures, and ensuring the safe operation of facilities.

[0064] Example 2

[0065] Please refer to Figures 6 to 12 , and please refer to Figures 1 to 5 This embodiment differs from the first embodiment in that it further includes two anemometers 7 and two infrared laser timers 6, each of which is communicatively connected to an external processing system. The anemometers 7 are each positioned within the corresponding outer space and spaced above the corresponding monitoring mechanism 3. The anemometers 7 are each mounted on the hard enclosure 1. The infrared laser timers 6 are each positioned within the central space. The infrared laser timers 6 monitor whether the corresponding air intake mechanism 4 is open and record the opening and closing times of the corresponding air intake mechanism 4. The timers start timing when the corresponding air intake mechanism 4 is open and stop timing when the corresponding air intake mechanism 4 is closed. Specifically, the infrared laser timers 6 are positioned on the lower end surface of the air intake mounting base 41. When the air intake movable door panel 43 is closed, the infrared laser timers 6 receive infrared light emitted by themselves and reflected by surrounding objects. When the air intake movable door panel 43 is open, the air intake movable door panel 43 blocks the infrared laser timers 6 from receiving infrared light emitted by themselves and reflected by surrounding objects. The salt fog solid particle concentration monitoring method for coastal environments provided in this embodiment can obtain the salt fog solid particle concentration more accurately and efficiently.

[0066] When in use, the salt mist solid particle concentration monitoring system for coastal environments can be set on the top of the building. In order to allow the wind to pass as much as possible, the front-to-back airflow channel inside the hard enclosure 1 can be parallel to the common wind direction of the current season; or four or eight salt mist solid particle concentration monitoring systems for coastal environments can be used, and the front-to-back airflow channels inside the hard enclosure 1 of the four salt mist solid particle concentration monitoring systems for coastal environments can be parallel to the four directions of east, south, west and north respectively, or the front-to-back airflow channels inside the hard enclosure 1 of the eight salt mist solid particle concentration monitoring systems for coastal environments can be parallel to the eight directions of east, west, south, north, southeast, southwest, northeast and northwest respectively. When the wind blows, please refer to Figure 7 , the airflow enters the external space on the windward side; when the airflow reaches the predetermined wind level, refer to Figure 8 The airflow opens the air intake mechanism 4 on the windward side and the air outlet mechanism 5 on the windward side and enters the middle space. Due to the guiding effect of the air intake movable door plate 43 of the air intake mechanism 4 on the windward side, the airflow first flows downward, and after being blocked by the corresponding vertical support plate, the airflow moves upward, and after being blocked by the top plate of the hard enclosure 1 and the air intake mechanism 4 on the windward side, the airflow blows to the pneumatic plate of the adaptive tightening system 2, thereby driving the upper top plate 23 to move, and the movement of the upper top plate 23 drives the upper roller 24 to rotate, and the rotation of the upper roller 24 drives the middle roller 25 to rotate, and the rotation of the middle roller 25 drives the lower roller 26 to rotate, and the rotation direction of the middle roller 25 is opposite to that of the upper roller 24, and the rotation direction of the middle roller 25 is opposite to that of the lower roller 26. The rotation of the lower roller 26 drives the lower top plate 27 to move in the opposite direction to the air outlet mechanism 5 on the windward side, so that the air outlet mechanism 5 on the windward side is in a closed state. Figure 9 As shown; airflow continues, see Figure 10 , the airflow opens the air outlet mechanism on the leeward side and enters the interior of the monitoring mechanism 3 on the leeward side; the airflow continues to move forward, see Figure 11 , the airflow flows out of the monitoring mechanism 3 on the leeward side through the vertical filter plate 36. The monitoring mechanism 3 collects the salt mist solid particles in the airflow passing through the monitoring mechanism 3 through the vertical filter plate and the water tank 32. Then, the airflow continuously enters the middle space from the external space on the windward side through the air intake mechanism 4 on the windward side (at this time, the air outlet mechanism on the windward side is closed by the adaptive tightening system 2 and the airflow cannot pass through), then passes through the air outlet mechanism on the leeward side, enters the monitoring mechanism on the leeward side, and finally flows out of the monitoring mechanism 3 on the leeward side through the vertical filter plate 36 until the airflow reaches the middle space. Figure 12 The airflow stops. It should be noted that the airflow path in Example 2 is the same as that in Example 1. Subsequently, the external processing system uses the salt fog solid particles collected by monitoring mechanism 3 to determine the concentration of salt fog solid particles in the coastal environment. Once the salt fog solid particle concentration exceeds the standard, the reinforced concrete structure can be promptly protected, reducing the risk of salt fog erosion of the reinforced concrete structure. This is of great significance for evaluating the corrosion resistance of reinforced concrete structures in coastal cities, formulating protective measures, and ensuring the safe operation of facilities.

[0067] Preferably, in the above-mentioned method for monitoring the concentration of salt fog solid particles in a coastal environment, the concentration of salt fog solid particles is obtained by the following method:

[0068] When the air intake mechanism 4 is opened by the wind, the corresponding infrared laser timer 6 starts timing, and the opening time of the air intake mechanism 4 is recorded as t0. The weight m0 of the liquid pure water 34 when the air intake mechanism 4 is opened is measured by the weight sensor 33;

[0069] When the air intake mechanism 4 is closed, the corresponding infrared laser timer 6 stops timing, and the closing time of the air intake mechanism 4 is recorded as t1; the weight m1 of the liquid pure water 34 when the air intake mechanism 4 is closed is measured by the weight sensor 33;

[0070] The wind speed is measured in real time by the anemometer 7, and the average wind speed v during the period from opening to closing of the air intake mechanism 4 is obtained.

[0071] Calculate the air flow Q, Q = dhv, where d is the width of the rigid enclosure 1 and h is the distance from the top of the monitoring mechanism 3 to the top plate of the rigid enclosure 1;

[0072] Calculate the total volume of air passing through the salt spray solid particle concentration monitoring device during the period from when the air intake mechanism 4 is opened to when it is closed, and record it as V, where V=Q(t1-t0);

[0073] Calculate the salt mist solid particle concentration W as W = (m1 - m0) / V, where the unit of salt mist solid particle concentration W is g / L (grams per liter). Based on the law of conservation of mass, which states that in a chemical reaction or physical change, the sum of the masses of the substances participating in the reaction (or mixing) equals the total mass of the substances generated (or formed) after the reaction (or mixing), ignoring surface evaporation of the liquid purified water 34. Alternatively, a water replenishment device is used to maintain the original level of the liquid purified water 34 in the water tank 32.

[0074] The salt fog solid particle concentration monitoring method for coastal environments provided in this embodiment can more accurately and automatically measure the salt fog solid particle concentration in coastal environments. Once the salt fog solid particle concentration exceeds the standard, reinforced concrete structures can be protected in a timely manner to reduce the risk of salt fog erosion of reinforced concrete structures. This is of great significance for evaluating the corrosion resistance of reinforced concrete structures in coastal cities, formulating protective measures, and ensuring the safe operation of facilities.

[0075] Example 3

[0076] Please refer to Figures 13 to 16 , and please refer to Figures 1 to 12The difference between this embodiment and the first and second embodiments is that the upper horizontal support member 23 in the adaptive tightening system 2 adopts an upper rack, the lower horizontal support member 25 adopts a lower rack, and the reverse transmission mechanism includes two gears 24' and two elastic cables 26. The two gears 24' are respectively installed on the horizontal support part 212. The horizontal support part 212 is provided with a through hole for accommodating the gears 24'. The lower rack is arranged parallel to the bottom of the horizontal support part 212. , and the two ends of the lower rack are connected to the two ends of the horizontal support portion 212 via corresponding elastic cables 26. The lower rack and upper rack are respectively located on the upper and lower sides of the gear 24', and both gears 24' are meshed with the upper and lower racks. When the airflow enters the middle space, the airflow pushes the pneumatic plate 22 to move, thereby driving the upper rack to move. The movement of the upper rack drives the gear 24' to rotate, and the rotation of the gear 24' drives the lower rack to move in the opposite direction, causing the air outlet mechanism on the windward side to be in a closed state. Because the salt mist solid particles in the airflow entering the middle space through the windward air outlet mechanism 5 will be filtered out by the vertical filter plate 36 of the windward monitoring mechanism 3, the accuracy of the salt mist solid particle concentration measurement will be reduced. Therefore, by providing an adaptive tightening system 2, the air outlet mechanism 5 on the windward side can be closed, thereby improving the accuracy of the salt mist solid particle concentration.

[0077] Preferably, the adaptive tightening system also includes a gear drive motor (not shown) and two infrared laser timers 6. The gear drive motor and the two infrared laser timers 6 are respectively connected to the external processing system. The infrared laser timers 6 are respectively arranged in the middle space. The infrared laser timers 6 can monitor whether the corresponding monitoring mechanism is turned on. When the air intake mechanism 4 on the windward side is opened by the airflow, the infrared laser timer sends the information that the air intake mechanism 4 on the windward side is opened by the airflow to the external processing system. After receiving the information, the external processing system notifies the gear drive motor to work, and the gear drive motor drives the gear 24' to rotate. The gear 24' drives the lower rack to move toward the air outlet mechanism 5 on the windward side, closing the air outlet mechanism 5 on the windward side, thereby ensuring that the lower rack can close the air outlet mechanism 5 on the windward side in time.

[0078] Example 4

[0079] Please refer to Figures 17 and 18 , and please refer to Figures 1 to 12The difference between this embodiment and other embodiments is that the upper horizontal support member 23 in the adaptive tightening system 2 adopts an upper top plate, and the lower horizontal support member adopts a lower top plate. The reverse transmission mechanism includes two transmission wheels 24" and a transmission belt 26". The two transmission wheels 24" are respectively installed on the horizontal support part, and the transmission belt 26" is installed on the two transmission wheels 24". The horizontal support part 212 is provided with a through hole for accommodating the reverse transmission mechanism. The upper top plate and the transmission belt 26" are fixedly connected at the upper center by a connecting member 27", and the lower top plate and the transmission belt 26" are fixedly connected at the lower center by a connecting member 27". When the airflow enters the middle space, the airflow pushes the pneumatic plate 22 to move, thereby driving the upper top plate to move. The movement of the upper top plate drives the transmission belt 26" to move, thereby driving the lower top plate to move in the opposite direction, so that the air outlet mechanism on the windward side is in a closed state.

[0080] In summary, the salt fog solid particle concentration monitoring method for coastal environments provided in this embodiment can use natural wind to automatically monitor the salt fog solid particle concentration in coastal environments. Once the salt fog solid particle concentration exceeds the standard, the reinforced concrete structure can be protected in a timely manner to reduce the risk of salt fog erosion of the reinforced concrete structure. This is of great significance for evaluating the corrosion resistance of reinforced concrete structures in coastal cities, formulating protective measures, and ensuring the safe operation of facilities.

[0081] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A method for monitoring salt spray solid particle concentration in a coastal environment, characterized in that: A salt fog solid particle concentration monitoring system for coastal environment is adopted, and the salt fog solid particle concentration monitoring system for coastal environment includes a salt fog solid particle concentration monitoring device and an external processing system, and the salt fog solid particle concentration monitoring device includes a hard enclosure and two valve assemblies arranged inside the hard enclosure, an adaptive tightening system and two monitoring mechanisms, and the monitoring mechanism is communicatively connected with the external processing system, and the hard enclosure is arranged horizontally, and the hard enclosure has an air flow channel that passes through from front to back, and the two valve assemblies divide the air flow channel into three spaces along the longitudinal direction of the air flow channel, and the three spaces include a middle space and outer spaces on both sides of the middle space, and the adaptive tightening system is arranged in the middle space and in the middle of the bottom plate of the hard enclosure, and each valve assembly includes a one-way air intake mechanism and a two-way air outlet mechanism, and the air intake mechanism can only take the outer The airflow in the side space is introduced into the middle space, and the air intake mechanism and the air outlet mechanism are arranged correspondingly up and down. When the air intake mechanism and the air outlet mechanism of the two valve assemblies are in a closed state, the lower end of the air intake mechanism and the upper end of the corresponding air outlet mechanism can offset each other, so that the middle space becomes a closed space. The two monitoring mechanisms are respectively arranged on the outside of the air outlet mechanism of the corresponding valve assembly. The resistance to opening of the air intake mechanism and the air outlet mechanism is the same. When the airflow reaches a predetermined wind force level, the airflow can open the air intake mechanism and the air outlet mechanism on the windward side, enter the middle space, and drive the adaptive tightening system to make the adaptive tightening system close the air outlet mechanism on the windward side. At the same time, the airflow continues to move forward and flows through the monitoring mechanism on the leeward side. The monitoring mechanism can collect salt fog solid particles in the airflow flowing through the monitoring mechanism. The external processing system uses the salt fog solid particles collected by the monitoring mechanism to judge the concentration of salt fog solid particles in the coastal environment.

2. The method for monitoring salt spray solid particle concentration in a coastal environment according to claim 1, wherein: The monitoring mechanism includes a monitoring room and a water tank, the water tank is arranged in the monitoring room, a weight sensor is arranged between the bottom of the water tank and the bottom plate of the hard enclosure, the weight sensor is connected to the external processing system by wired or wireless means, there is liquid pure water inside the water tank, a horizontal partition is arranged above the water tank, one end of the horizontal partition is arranged on the outer side surface that abuts the lower end of the air intake mechanism and the upper end of the air outlet mechanism and can simultaneously abut the lower end of the air intake mechanism and the upper end of the air outlet mechanism, the other end of the horizontal partition is arranged on the outer side surface that abuts the lower end of the air intake mechanism and the upper end of the air outlet mechanism One end is connected to the upper end of the side wall of the water tank away from the adaptive tightening system through a vertical filter plate. The monitoring chamber is surrounded by an air outlet mechanism, a horizontal partition, a vertical filter plate, the side wall of the water tank away from the adaptive tightening system and a hard enclosure. The airflow entering the monitoring mechanism passes through the vertical filter plate and flows out of the monitoring mechanism. The salt mist solid particles in the airflow passing through the vertical filter plate are blocked by the vertical filter plate and fall into the liquid pure water in the water tank. The weight change of the liquid pure water is monitored by a weight sensor to obtain the weight change of the salt mist solid particles in the liquid pure water.

3. The method for monitoring salt spray solid particle concentration in a coastal environment according to claim 1, wherein: The adaptive tightening system includes a bracket, several pneumatic plates, an upper horizontal support, a reverse transmission mechanism and a lower horizontal support. The several pneumatic plates are fixedly arranged on the upper horizontal support at equal intervals. The upper horizontal support and the lower horizontal support are both arranged horizontally. The pneumatic plates are arranged vertically and perpendicular to the longitudinal direction of the hard enclosure. The bracket includes two vertical support plates and a horizontal support part. Each vertical support plate is arranged along the transverse length of the hard enclosure. A through hole is provided on each vertical support plate for the lower horizontal support to pass through. The width of the upper horizontal support and the lower horizontal support are both less than Due to the width of the vertical support plates, the lower ends of the two vertical support plates are spaced apart and arranged on the bottom plate of the hard enclosure, and the upper ends of the two vertical support plates are respectively vertically connected to the two ends of the horizontal support part. The reverse transmission mechanism is arranged on the horizontal support part of the bracket, the upper horizontal support member is arranged above the reverse transmission mechanism, and the lower horizontal support member is arranged parallel to the bottom of the horizontal support part. When the airflow enters the middle space, the airflow pushes the pneumatic plate to move, thereby driving the upper horizontal support member to move. The upper horizontal support member drives the lower horizontal support member to move in the opposite direction through the reverse transmission mechanism, so that the air outlet mechanism on the windward side is in a closed state.

4. The method for monitoring salt spray solid particle concentration in a coastal environment according to claim 1, wherein: The heights of the two pneumatic plates located in the middle of the upper horizontal support member are the highest, and the heights of the plurality of pneumatic plates decrease in sequence from the center of the upper horizontal support member to both sides.

5. The method for monitoring salt spray solid particle concentration in a coastal environment according to claim 4, wherein: The upper horizontal support member adopts an upper top plate, and the lower horizontal support member adopts a lower top plate. The reverse transmission mechanism includes a plurality of hollow rollers and two elastic cables. A long strip through hole is provided on the horizontal support part for the plurality of hollow rollers to pass through. The hollow rollers are respectively installed on the horizontal support part. The lower top plate is arranged parallel to the bottom of the horizontal support part, and the two ends of the lower top plate are connected to the two ends of the horizontal support part through corresponding elastic cables. The plurality of hollow rollers are arranged on the lower top plate in sequence, and the upper top plate is arranged on the plurality of hollow rollers. When the airflow enters the middle space, the airflow pushes the pneumatic plate to move, thereby driving the upper top plate to move. The movement of the upper top plate drives the hollow roller to rotate, and the rotation of the hollow roller drives the lower top plate to move in the opposite direction, so that the air outlet mechanism on the windward side is in a closed state.

6. The method for monitoring salt spray solid particle concentration in a coastal environment according to claim 1, wherein: The top ends of the air intake ducts are connected to the top plate of the air intake ducts respectively, and the bottom ends of the air intake ducts are connected to the top plate of the air intake ducts respectively. A through hole is provided at the bottom of the air intake ducts. The air intake arc end plate is located in the groove of the air intake semicircular groove body. The outer surface of the air intake arc end plate matches and fits the inner surface of the air intake semicircular groove body. The upper end of the air intake movable door plate passes through the through hole at the bottom of the air intake semicircular groove body and is vertically connected to the middle of the outer convex surface of the air intake arc end plate. The air intake check plate is fixedly arranged in the air intake fixed seat, and the air intake check plate is located on the outside of the end of the air intake arc end plate away from the central space, and the air intake check plate can limit the air intake movable door plate from rotating in the direction away from the central space.

7. The method for monitoring salt spray solid particle concentration in a coastal environment according to claim 1, wherein: The air outlet mechanism includes an air outlet fixed seat, an air outlet arc-shaped end plate, an air outlet movable door plate and an air outlet top plate, the air outlet fixed seat and the air outlet movable door plate are all arranged along the horizontal length of the hard enclosure, the air outlet fixed seat is an air outlet semicircular groove body with an opening downward, the bottom two ends of the air outlet semicircular groove body are respectively fixedly connected to the bottom plate of the hard enclosure, a through hole is provided on the top of the air outlet semicircular groove body, the air outlet arc end plate is located in the groove of the air outlet semicircular groove body, the outer surface of the air outlet arc end plate matches and sticks to the inner surface of the air outlet semicircular groove body, The upper end of the air outlet movable door plate passes through the through hole at the bottom of the air outlet semicircular groove body and is vertically connected to the middle part of the outer convex surface of the air outlet arc-shaped end plate. The air outlet top plate is vertically fixed to the middle part of the air outlet fixed seat. The lower end of the air outlet top plate is fixedly connected to the bottom plate of the hard enclosure. The air outlet top plate and the air outlet movable door plate in the closed state are located in the same plane. A horizontally arranged cylinder is provided on the top of the air outlet top plate. The inner concave surface of the air outlet arc-shaped end plate is supported by the air outlet top plate and the air outlet arc-shaped end plate can rotate freely around the cylinder on the top of the air outlet top plate.

8. The method for monitoring salt spray solid particle concentration in a coastal environment according to claim 1, wherein: It also includes two anemometers and two infrared laser timers, which are respectively communicated with the external processing system. The anemometers are respectively arranged in the corresponding outer space and are spaced above the corresponding monitoring mechanisms. The anemometers are respectively installed on the hard enclosures, and the infrared laser timers are respectively arranged in the middle space. The infrared laser timers can monitor whether the corresponding air intake mechanism is open, record the time points of the corresponding air intake mechanism opening and closing, start timing when the corresponding air intake mechanism is opened, and stop timing when the corresponding air intake mechanism is closed.

9. The method for monitoring salt spray solid particle concentration in a coastal environment according to claim 8, wherein: The salt spray solid particle concentration is obtained by the following method: When the air intake mechanism is opened by wind, the corresponding infrared laser timer starts timing, and the opening moment of the air intake mechanism is recorded as t0. The weight m0 of the liquid pure water when the air intake mechanism is opened is measured by the weight sensor; When the air intake mechanism is closed, the corresponding infrared laser timer stops timing, and the closing time of the air intake mechanism is recorded as t1; the weight m1 of the liquid pure water when the air intake mechanism is closed is measured by the weight sensor; The wind speed is measured in real time by an anemometer, and the average wind speed v from the opening to the closing of the air intake mechanism is obtained. Calculate the air flow rate Q, Q = dhv, where d is the width of the hard enclosure and h is the distance from the top of the monitoring mechanism to the top plate of the hard enclosure; Calculate the total volume of air passing through the salt spray solid particle concentration monitoring device from the time the air intake mechanism is opened to the time it is closed, denoted as V, where V = Q(t1-t0); Calculate the salt spray solid particle size concentration W, W = (m1-m0) / V, the unit of salt spray solid particle size concentration W is g / L.

10. The method for monitoring salt spray solid particle concentration in a coastal environment according to claim 1, wherein: The salt mist solid particle concentration is obtained by the following method: the weight change of the liquid pure water is monitored by a monitoring device to obtain the daily weight change of the salt mist solid particles, and the daily measured weight change of the salt mist solid particles is used as the salt mist solid particle concentration in the air, in grams per day.

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